JmdnsHomekitAdvertiser created its own JmDNS when given an InetAddress but
never closed it, and registered a shutdown hook on every advertise() that was
never removed. Each stopped HomekitRoot therefore left a running JmDNS
instance behind, kept reachable by its shutdown hook.

stop() now removes the shutdown hook, closes the JmDNS only if the advertiser
created it, and resets the advertising state so later changes to
discoverability, MAC or configuration index do not re-register the service.

Add custom min/max to window covering tilt angle characteristics

Close owned mDNS instance and remove shutdown hook on stop

Co-authored-by: Eugen <[email protected]>